#!/usr/bin/python3
# _*_ coding:utf-8 _*_

def process():
    import time

    scale = 50
    print("执行开始，祈祷不报错".center(scale // 2,"-"))
    start = time.perf_counter()
    for i in range(scale + 1):    
        a = "*" * i    
        b = "." * (scale - i)    
        c = (i / scale) * 100   
        dur = time.perf_counter() - start    
        print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,dur),end = "")    
        time.sleep(0.05)    
    print("\n"+"执行结束，万幸".center(scale // 2,"-"))

